US7351923B2 - Portable communication device with swiveling key - Google Patents

Portable communication device with swiveling key Download PDF

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Publication number
US7351923B2
US7351923B2 US11/365,765 US36576506A US7351923B2 US 7351923 B2 US7351923 B2 US 7351923B2 US 36576506 A US36576506 A US 36576506A US 7351923 B2 US7351923 B2 US 7351923B2
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United States
Prior art keywords
key
external housing
actuation surface
actuation
communication device
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Expired - Fee Related, expires
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US11/365,765
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US20060283692A1 (en
Inventor
Philippe Barthelet
Christophe Thullier
Sylvain Gautier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maples Corp Services Ltd
DRNC Holdings Inc
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TCT Mobile Ltd
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Assigned to TCL & ALCATEL MOBILE PHONES LIMITED reassignment TCL & ALCATEL MOBILE PHONES LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GAUTIER, SYLVAIN, THULLIER, CHRISTOPHE, BARTHELET, PHILIPPE
Publication of US20060283692A1 publication Critical patent/US20060283692A1/en
Application granted granted Critical
Publication of US7351923B2 publication Critical patent/US7351923B2/en
Assigned to IPG ELECTRONICS 504 LIMITED reassignment IPG ELECTRONICS 504 LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TCL COMMUNICATIONS TECHNOLOGY HOLDINGS LIMITED, TCT MOBILE LIMITED (F/K/A T&A MOBILE PHONES LIMITED)
Assigned to FLEXTRONICS INNOVATIVE DEVELOPMENT, LTD. reassignment FLEXTRONICS INNOVATIVE DEVELOPMENT, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IPG ELECTRONICS 504 LIMITED
Assigned to IMERJ, LTD. reassignment IMERJ, LTD. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: FLEXTRONICS INNOVATIVE DEVELOPMENT, LTD.
Assigned to Z124, C/O MAPLES CORPORATE SERVICES LIMITED reassignment Z124, C/O MAPLES CORPORATE SERVICES LIMITED CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: IMERJ, LTD.
Assigned to DRNC HOLDINGS, INC. reassignment DRNC HOLDINGS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FLEXTRONICS INTERNATIONAL LTD.
Assigned to DRNC HOLDINGS, INC. reassignment DRNC HOLDINGS, INC. CORRECT AN ERROR IN THE NAME OF THE CONVEYING PARTY IN THE COVER SHEET PREVIOUSLY RECORDED AT REEL 031266 AND FRAME 0803 Assignors: Z124
Expired - Fee Related legal-status Critical Current
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/008—Actuators other then push button
    • H01H2221/016—Lever; Rocker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/008—Actuators other then push button
    • H01H2221/018—Tumbler
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/064—Limitation of actuating pressure

Definitions

  • the present invention concerns a new key for use in any type of portable communication device such as mobile handset, Personal Digital Assistant, organizes or other small devices for which bulk constraints are generally high. More precisely, the invention relates to the design of a swiveling key which enables protection of the internal components in case of impacts or shocks.
  • a swiveling key for actuation of one ore several mechanical switches located inside the external housing of a portable device.
  • This key generally comprises an actuation surface for manual actuation by a user.
  • the mechanical switches can be actuated by swiveling the key around at least an axis which is substantially perpendicular to the actuation surface of the key. This means that the mechanical switches must be located behind the key, while being eccentric with respect to said axis.
  • the actuation surface preferentially protrudes from the external housing.
  • the key is much more exposed to external constraints, especially to shocks.
  • the key may strongly swivels, and this can cause damages on the mechanical switch which is behind the key.
  • a first solution consists in providing a key made of rubber in order that the key can absorb shocks.
  • the tactile feeling for a user is not sufficient.
  • the finishing of a rubber key is limited. This solution does not enable to have a large choice of esthetic aspects for the final key (plating, paint, steal, transparent . . . )
  • Another known solution enabling the use of a plastic key consists in providing a silicon layer inside the housing, between the key and the mechanical switch. This solution is good for the tactile effect and enables a large variety of finishing. However, it is a very costly solution in term of added material, and also of assembly.
  • the aim of the invention is to remedy the above drawbacks by proposing an economic solution enabling the use of a plastic key, with the advantages of a good tactile feeling and various finishing, while having a good protection of the mechanical switch in case of strong shocks.
  • an object of the present invention is a portable communication device with an external housing containing at least a mechanical switch and at least one key for actuation of said mechanical switch, said key comprising an actuation surface (which protrudes from said external housing through an aperture, and the mechanical switch being able to be actuated by swiveling of the key around an axis substantially perpendicular to said actuation surface, characterized in that said key is made of plastic material and comprises, in its thickness and behind said actuation surface, at least one emerging slit extending substantially parallel to said actuation surface.
  • FIG. 1 shows schematically a partial cross-section of a device equipped with a key in accordance with the invention, in a rest position;
  • FIG. 2 shows the same view as above, while normal actuation of the key is made
  • FIG. 3 shows the same the same view as above, in case of big external shock on the key.
  • reference 1 indicates part of a wall of an external housing of a portable communication device (for instance the lateral wall of a mobile phone casing)
  • references 2 a , 2 b indicate two mechanical switches inside said housing
  • reference 3 designates a swiveling key enabling the actuation of one of the mechanical switches.
  • Mechanical switches 2 a and 2 b may be supported by the same PCB 2 .
  • Key 3 lies through an aperture 10 in the housing and comprises an actuation surface 30 . As can be seen from FIG. 1 , said actuation surface 30 protrudes from said external housing when the key is in its rest position. This advantageously enables a good ergonomic use.
  • key 3 can swivel around axis XX′ ( FIG. 1 ).
  • Mechanical switches 2 a , 2 b are eccentric with respect to said axis. In the rest position shown in FIG. 1 , key 3 is in contact with none of the mechanical switches. If the user presses key 3 , for instance on the lowest area as indicated by array F on FIG. 2 , key 3 swivels around axis XX′ until one extremity 31 of the key side opposite to actuation surface 30 reaches a metallic dome of mechanical switch 2 b . Under pressure, this metallic dome will be resiliently deformed until activation of the switch. Other kind of mechanical switches can also be used. Key 3 is made of plastic (thus rigid) material. This enables several possibilities of finishing, including painting, plating . . .
  • said key comprises also slits 31 a , 31 b in the thickness of the key, said slits extending substantially parallel to actuation surface 30 .
  • the aim of these slits (the number of which should correspond to the number of mechanical switches which can be actuated by the same key) is to absorb a shock in order to prevent the mechanical switch from being deteriorated.
  • the shape and size of each slit 31 a , 31 b is a compromise to make between, on one hand, the necessity to have a good global rigidity of the key in order to have no impact on the click feeling, and, on the other hand, the necessity to have enough deformation in order to absorb shocks.
  • the position of the slits inside the thickness of the key also depends on the general shape of the key. However, the slits must be located behind the actuation surface 30 . As we can see from the drawings, slits are emerging on aperture 10 . Parts of the actuation surface which face directly the slits have thus, despite the rigidity of plastic, some elasticity. When the key is in its rest position, the slits extend preferably in the plane of aperture 10 , and sets back from the external surface of wall 1 of the external housing, as can be seen from FIG. 1 . Consequently, slits are advantageously not visible from the exterior. In case of a big constraint due to a shock, as materialized by arrow F′ on FIG.
  • slit 31 b has been designed in order to enable a deformation of the key until the corresponding area of the activation surface becomes flush with external housing 1 , as shown on FIG. 3 . When it comes in this position, most of the shock has been absorbed, preventing the mechanical switch from being deteriorated.
  • the present invention can be applied for any type of portable device, for which the risk of shocks is high, and whatever the position of the key with respect to the external housing of the device.
  • the key in the case of a mobile handset, the key may be a lateral key, or any key located at the front side or the rear side of the mobile handset.
  • a key which may swivel around an axis is preferably used in order to activate two mechanical switches, the invention can also apply for the case of a single mechanical switch.
  • a man skilled in the art will easily adapt the principle of the invention to a key which may swivel around several axes, enabling the actuation of more than two mechanical switches.

Abstract

A portable communication device with an external housing (1) containsat least a mechanical switch (2 a; 2 b) and at least one key (3) for actuation of said mechanical switch (2 a; 2 b), said key comprising an actuation surface (30) which protrudes from said external housing through an aperture (10), and the mechanical switch being able to be actuated by swiveling of the key (3) around an axis (XX′) substantially perpendicular to said actuation surface. According to the invention said key is made of plastic material and comprises, in its thickness and behind said actuation surface, at least one emerging slit (31 a; 31 b) extending substantially parallel to said actuation surface.

Description

RELATED APPLICATION
This application is related to and claims the benefit of priority from European Patent Application NO. 05 300 235.8, filed on Mar. 31, 2005, the entirety of which is incorporated herein by reference.
FIELD OF THE INVENTION
The present invention concerns a new key for use in any type of portable communication device such as mobile handset, Personal Digital Assistant, organizes or other small devices for which bulk constraints are generally high. More precisely, the invention relates to the design of a swiveling key which enables protection of the internal components in case of impacts or shocks.
BACKGROUND OF THE INVENTION
The use of a swiveling key for actuation of one ore several mechanical switches located inside the external housing of a portable device is already known. This key generally comprises an actuation surface for manual actuation by a user. The mechanical switches can be actuated by swiveling the key around at least an axis which is substantially perpendicular to the actuation surface of the key. This means that the mechanical switches must be located behind the key, while being eccentric with respect to said axis.
In order to provide a good ergonomic use, the actuation surface preferentially protrudes from the external housing. However, this means also that the key is much more exposed to external constraints, especially to shocks. In case of big shocks, for instance if the communication device falls down, the key may strongly swivels, and this can cause damages on the mechanical switch which is behind the key.
Several solutions have been proposed in order to protect the mechanical switch:
A first solution consists in providing a key made of rubber in order that the key can absorb shocks. However, in this case, the tactile feeling for a user is not sufficient. In addition, the finishing of a rubber key is limited. This solution does not enable to have a large choice of esthetic aspects for the final key (plating, paint, steal, transparent . . . )
Another known solution enabling the use of a plastic key consists in providing a silicon layer inside the housing, between the key and the mechanical switch. This solution is good for the tactile effect and enables a large variety of finishing. However, it is a very costly solution in term of added material, and also of assembly.
OBJECTS AND SUMMARY OF THE INVENTION
The aim of the invention is to remedy the above drawbacks by proposing an economic solution enabling the use of a plastic key, with the advantages of a good tactile feeling and various finishing, while having a good protection of the mechanical switch in case of strong shocks.
To this aim, an object of the present invention is a portable communication device with an external housing containing at least a mechanical switch and at least one key for actuation of said mechanical switch, said key comprising an actuation surface (which protrudes from said external housing through an aperture, and the mechanical switch being able to be actuated by swiveling of the key around an axis substantially perpendicular to said actuation surface, characterized in that said key is made of plastic material and comprises, in its thickness and behind said actuation surface, at least one emerging slit extending substantially parallel to said actuation surface.
BRIEF DESCRIPTION OF THE DRAWINGS
Other features and advantages of the invention will become apparent from the following description of one possible preferred embodiment of the invention, given by way of non-limiting example only, and with reference to the accompanying drawings, in which:
FIG. 1 shows schematically a partial cross-section of a device equipped with a key in accordance with the invention, in a rest position;
FIG. 2 shows the same view as above, while normal actuation of the key is made;
FIG. 3 shows the same the same view as above, in case of big external shock on the key.
 DETAILED DESCRIPTION
In FIGS. 1 to 3, reference 1 indicates part of a wall of an external housing of a portable communication device (for instance the lateral wall of a mobile phone casing), references 2 a, 2 b indicate two mechanical switches inside said housing, and reference 3 designates a swiveling key enabling the actuation of one of the mechanical switches. Mechanical switches 2 a and 2 b may be supported by the same PCB 2. Key 3 lies through an aperture 10 in the housing and comprises an actuation surface 30. As can be seen from FIG. 1, said actuation surface 30 protrudes from said external housing when the key is in its rest position. This advantageously enables a good ergonomic use. In order for the user to activate either switch 2 a or switch 2 b, key 3 can swivel around axis XX′ (FIG. 1). Mechanical switches 2 a, 2 b are eccentric with respect to said axis. In the rest position shown in FIG. 1, key 3 is in contact with none of the mechanical switches. If the user presses key 3, for instance on the lowest area as indicated by array F on FIG. 2, key 3 swivels around axis XX′ until one extremity 31 of the key side opposite to actuation surface 30 reaches a metallic dome of mechanical switch 2 b. Under pressure, this metallic dome will be resiliently deformed until activation of the switch. Other kind of mechanical switches can also be used. Key 3 is made of plastic (thus rigid) material. This enables several possibilities of finishing, including painting, plating . . .
According to an essential feature of the invention, said key comprises also slits 31 a, 31 b in the thickness of the key, said slits extending substantially parallel to actuation surface 30. The aim of these slits (the number of which should correspond to the number of mechanical switches which can be actuated by the same key) is to absorb a shock in order to prevent the mechanical switch from being deteriorated. The shape and size of each slit 31 a, 31 b is a compromise to make between, on one hand, the necessity to have a good global rigidity of the key in order to have no impact on the click feeling, and, on the other hand, the necessity to have enough deformation in order to absorb shocks. The position of the slits inside the thickness of the key also depends on the general shape of the key. However, the slits must be located behind the actuation surface 30. As we can see from the drawings, slits are emerging on aperture 10. Parts of the actuation surface which face directly the slits have thus, despite the rigidity of plastic, some elasticity. When the key is in its rest position, the slits extend preferably in the plane of aperture 10, and sets back from the external surface of wall 1 of the external housing, as can be seen from FIG. 1. Consequently, slits are advantageously not visible from the exterior. In case of a big constraint due to a shock, as materialized by arrow F′ on FIG. 3, slit 31 b has been designed in order to enable a deformation of the key until the corresponding area of the activation surface becomes flush with external housing 1, as shown on FIG. 3. When it comes in this position, most of the shock has been absorbed, preventing the mechanical switch from being deteriorated.
The present invention can be applied for any type of portable device, for which the risk of shocks is high, and whatever the position of the key with respect to the external housing of the device. For instance, in the case of a mobile handset, the key may be a lateral key, or any key located at the front side or the rear side of the mobile handset. In addition, although a key which may swivel around an axis is preferably used in order to activate two mechanical switches, the invention can also apply for the case of a single mechanical switch. Moreover, a man skilled in the art will easily adapt the principle of the invention to a key which may swivel around several axes, enabling the actuation of more than two mechanical switches.

Claims (3)

1. A portable communication device comprising:
an external housing containing at least a mechanical switch and at least one key for actuation of said at least a mechanical switch, said at least one key having an actuation surface which protrudes from said external housing through an aperture, and the at least a mechanical switch being able to be actuated by swiveling of the at least one key around an axis substantially perpendicular to said actuation surface, wherein said at least one key is made of plastic material and includes, in a thickness and behind said actuation surface, at least one emerging slit extending substantially parallel to said actuation surface wherein said at least one emerging slit is designed in order to enable a deformation of the at least one key until a corresponding area of the activation surface becomes flush with the external housing.
2. A portable communication device according to claim 1, wherein, when the at least one key is in a rest position, said at least one emerging slit extends preferably in a plane of aperture, and sets back from the external housing.
3. A portable communication device according to claim 1, wherein said at least one key stands on a lateral wall of said external housing.
US11/365,765 2005-03-31 2006-02-28 Portable communication device with swiveling key Expired - Fee Related US7351923B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05300235A EP1708216B1 (en) 2005-03-31 2005-03-31 Portable communication device with swiveling key
EP05300235.8 2005-03-31

Publications (2)

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US20060283692A1 US20060283692A1 (en) 2006-12-21
US7351923B2 true US7351923B2 (en) 2008-04-01

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US11/365,765 Expired - Fee Related US7351923B2 (en) 2005-03-31 2006-02-28 Portable communication device with swiveling key

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US (1) US7351923B2 (en)
EP (1) EP1708216B1 (en)
CN (1) CN103594273B (en)
CA (1) CA2534933C (en)
DE (1) DE602005003450T2 (en)
ES (1) ES2297649T3 (en)
PT (1) PT1708216E (en)
RU (1) RU2418378C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080167071A1 (en) * 2007-01-06 2008-07-10 Scott Forstall User Programmable Switch

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* Cited by examiner, † Cited by third party
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US7863533B2 (en) * 2008-06-07 2011-01-04 Apple Inc. Cantilevered push button having multiple contacts and fulcrums

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US4127752A (en) 1977-10-13 1978-11-28 Sheldahl, Inc. Tactile touch switch panel
US4289943A (en) 1979-08-06 1981-09-15 Shin-Etsu Polymer Co., Ltd. Push-button switches
US4920238A (en) * 1987-11-02 1990-04-24 Seikosha Co., Ltd. Self-centering switch
US5283401A (en) 1992-07-30 1994-02-01 Schmucker Charles J Multiple switch assembly including lockable and/or vertically movable switch actuator
DE19746843A1 (en) 1997-10-23 1999-05-12 Bosch Gmbh Robert Multifunction button
US6037552A (en) * 1997-10-24 2000-03-14 Nec Corporation See-saw button device for electronic equipment
US6115030A (en) * 1997-12-18 2000-09-05 International Business Machines Corporation Trackpoint device
US6613990B2 (en) * 2001-09-26 2003-09-02 Mitsumi Electric Co., Ltd. Switch
US7060915B2 (en) * 2002-08-28 2006-06-13 Itt Manufacturing Enterprises, Inc. Multiple switching device
US7094979B2 (en) * 2004-06-18 2006-08-22 Sony Ericsson Mobile Communications Japan, Inc. Switching device and portable terminal device
US7094983B2 (en) * 2003-01-31 2006-08-22 Orion Electric Co., Ltd. Dual switch for selective removal of recording medium from compound device

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JP2002207551A (en) * 2001-01-12 2002-07-26 Matsushita Electric Ind Co Ltd Switch structure for portable terminal device
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Publication number Priority date Publication date Assignee Title
US4127752A (en) 1977-10-13 1978-11-28 Sheldahl, Inc. Tactile touch switch panel
US4289943A (en) 1979-08-06 1981-09-15 Shin-Etsu Polymer Co., Ltd. Push-button switches
US4920238A (en) * 1987-11-02 1990-04-24 Seikosha Co., Ltd. Self-centering switch
US5283401A (en) 1992-07-30 1994-02-01 Schmucker Charles J Multiple switch assembly including lockable and/or vertically movable switch actuator
DE19746843A1 (en) 1997-10-23 1999-05-12 Bosch Gmbh Robert Multifunction button
US6037552A (en) * 1997-10-24 2000-03-14 Nec Corporation See-saw button device for electronic equipment
US6115030A (en) * 1997-12-18 2000-09-05 International Business Machines Corporation Trackpoint device
US6613990B2 (en) * 2001-09-26 2003-09-02 Mitsumi Electric Co., Ltd. Switch
US7060915B2 (en) * 2002-08-28 2006-06-13 Itt Manufacturing Enterprises, Inc. Multiple switching device
US7094983B2 (en) * 2003-01-31 2006-08-22 Orion Electric Co., Ltd. Dual switch for selective removal of recording medium from compound device
US7094979B2 (en) * 2004-06-18 2006-08-22 Sony Ericsson Mobile Communications Japan, Inc. Switching device and portable terminal device

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
US20080167071A1 (en) * 2007-01-06 2008-07-10 Scott Forstall User Programmable Switch
US8000736B2 (en) * 2007-01-06 2011-08-16 Apple Inc. User programmable switch for portable data processing devices
US8185149B2 (en) 2007-01-06 2012-05-22 Apple Inc. User programmable switch

Also Published As

Publication number Publication date
EP1708216B1 (en) 2007-11-21
CN103594273A (en) 2014-02-19
PT1708216E (en) 2008-02-12
CA2534933A1 (en) 2006-09-30
ES2297649T3 (en) 2008-05-01
DE602005003450T2 (en) 2008-09-25
RU2006110341A (en) 2007-10-20
DE602005003450D1 (en) 2008-01-03
CA2534933C (en) 2015-03-31
EP1708216A1 (en) 2006-10-04
US20060283692A1 (en) 2006-12-21
CN103594273B (en) 2016-07-06
RU2418378C2 (en) 2011-05-10

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